package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrAttrgroupRelationService;
import com.atguigu.gulimall.product.service.AttrService;
import com.atguigu.gulimall.product.vo.AttrGroupWithAttrsVo;
import javafx.beans.binding.When;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.service.AttrGroupService;
import org.springframework.util.StringUtils;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

    @Autowired
    AttrAttrgroupRelationService attrAttrgroupRelationService;

    @Autowired
    AttrService attrService;


    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                new QueryWrapper<AttrGroupEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params, Long catelogId) {

        String key = (String) params.get("key");
        QueryWrapper<AttrGroupEntity> wrapper = new QueryWrapper<AttrGroupEntity>();
        // select * from AttrGroup where attr_group_id=key or attr_group_name like key
        // 模糊查询
        if(!StringUtils.isEmpty(key)){
            // 传入consumer
            wrapper.and((obj)->{
                obj.eq("attr_group_id", key).or().like("attr_group_name", key);
            });
        }
        if(catelogId == 0){
            IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params),
                    wrapper);
            return new PageUtils(page);
        }else {
            wrapper.eq("catelog_id", catelogId);
            IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params),
                    wrapper);

            return new PageUtils(page);
        }
    }

    @Override
    public List<AttrGroupWithAttrsVo> getAttrGroupWithAttrsByCateId(Long catelogId) {

        // 1、获取该catId下的分组
        List<AttrGroupEntity> attrGroupEntities = this.list(
                new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));

        // 2、通过分组获得对应的属性
        List<AttrGroupWithAttrsVo> collect = attrGroupEntities.stream().map(group -> {
            // 2.1将组的信息注入
            AttrGroupWithAttrsVo vo = new AttrGroupWithAttrsVo();
            BeanUtils.copyProperties(group, vo);
            // 2.2将属性注入到vo的attrs中
            List<AttrEntity> attrs = attrService.getRelationAttr(group.getAttrGroupId());

            vo.setAttrs(attrs);

            return vo;
        }).collect(Collectors.toList());

        return collect;
    }

}